.container {
  width: 100%;
  height: 100%;
}

.infownd{
  box-sizing: border-box;
  position: relative;
  --back-color:white;
  width: max-content;
  &::after{
    content: '';
    position: absolute;
    left: 15px;
    top: 100%;
    width:0px;
    height: 0px;
    @borderWidth: 6px;
    border-top: @borderWidth solid var(--back-color,white);
    border-right: @borderWidth solid transparent;
    border-bottom: @borderWidth solid transparent;
    border-left: @borderWidth solid transparent;
  }
}